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In this activity, learners investigate the different salinity levels of oceans, rivers and estuaries.

In this chemistry activity (page 3 of the PDF), learners will learn about crystals by growing their very own.

Learners build models to learn about the special cells and structures that plants use to move water from their roots up through the stems and leaves.

Did you know that the water we use today is the same water found on Earth millions of years ago? The Earth constantly uses and recycles water in a process called the water cycle.

In this activity, learners create a biosphere in a baggie.